Spline connector with high sealing performance
By introducing a sealing mechanism and a lubrication mechanism into the spline joint, the problems of poor sealing and easy jamming are solved, achieving high sealing performance and preventing jamming, thus improving the practicality of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-20
AI Technical Summary
Existing spline joints with high sealing performance have poor sealing performance during use and are prone to jamming after long-term use, which reduces the practicality of the device.
A spline joint including a sealing mechanism and a lubrication mechanism was designed. The sealing mechanism consists of a sealing ring, a rubber ring, an anti-wear ring, a connecting ring, and a sealing airbag. The lubrication mechanism consists of an oil outlet groove and an oil inlet pipe to improve sealing performance and prevent jamming.
It improves the sealing performance of the spline joint, prevents jamming, and extends the service life of the device.
Smart Images
Figure CN224017583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spline joint technology, and in particular to a spline joint with high sealing performance. Background Technology
[0002] A spline coupling is a mechanical connection device used to connect two shafts or parts, typically for transmitting torque or motion. It achieves this connection through a spline structure (i.e., toothed grooves or slots machined on the shaft or connecting parts), effectively transmitting rotational motion from one shaft to another. Spline couplings are widely used in the automotive, industrial machinery, and transmission systems industries.
[0003] Basic structure of a spline connector
[0004] The spline connector consists of two main parts:
[0005] Splined shaft: It is usually a cylindrical shaft with a series of toothed grooves machined on its surface. These grooves are usually rectangular, trapezoidal or circular in shape.
[0006] Spline sleeve: It is used in conjunction with the spline shaft, and the inner surface of the spline sleeve is also machined with spline teeth that match the spline shaft.
[0007] These two parts are tightly connected through interlocking, transmitting torque and motion.
[0008] Working principle of spline connector
[0009] The working principle of a spline joint is to transmit torque through the toothed meshing between the spline shaft and the spline sleeve. During connection, the teeth on the spline shaft and the teeth inside the spline sleeve engage with each other, transmitting rotation through friction and meshing. Because the tooth structure of splines is generally quite robust and can withstand high axial forces and torques, spline joints perform well in high-load and high-frequency operation environments.
[0010] Types of spline connectors
[0011] External splines and internal splines:
[0012] External spline: The spline shaft has toothed grooves, and the inner hole of the sleeve is equipped with corresponding toothed grooves. This design is generally used to connect multiple components or in situations where the working environment is relatively complex.
[0013] Internal spline: The sleeve has toothed grooves, and the shaft has corresponding toothed grooves. This structure is suitable for the connection between the shaft and the sleeve.
[0014] Straight splines and slant splines:
[0015] Straight spline: The teeth of the spline are arranged in a straight line. Its characteristics include a simpler manufacturing process and suitability for low-speed, low-load transmission applications.
[0016] Slanted spline: The tooth profile has a certain slant angle. This design allows the spline joint to have better transmission capacity and higher stability when subjected to larger torque.
[0017] Trapezoidal splines and rectangular splines:
[0018] Trapezoidal spline: The tooth profile of the spline is trapezoidal, which can provide a larger contact area and is suitable for high torque transmission.
[0019] Rectangular spline: The tooth shape is rectangular, the structure is relatively simple, and it is suitable for relatively simple connection needs.
[0020] Advantages of spline connectors
[0021] High torque transmission capability: Spline joints can effectively transmit higher torque to the other end, making them suitable for high-load, high-torque applications.
[0022] High fatigue resistance: The toothed design of the spline structure enables the joint to maintain high strength and stability during long-term operation.
[0023] Easy assembly: Spline joints can be easily assembled and disassembled, making maintenance convenient.
[0024] Precise fit: The tooth profile of the spline is more precise, which can reduce the gap of the joint and avoid unnecessary friction.
[0025] Disadvantages of spline connectors
[0026] High manufacturing complexity: The machining of spline teeth requires high precision and complex manufacturing processes, resulting in relatively high manufacturing costs.
[0027] Limited applicability: Although spline joints have a strong torque transmission capability, they are mainly used for connections between shafts and sleeves, and their applicability is relatively limited.
[0028] While a spline joint with high sealing performance in the prior art can be used normally, its sealing performance is poor. Furthermore, with long-term use, the internal structure is prone to jamming, which reduces the practicality of the device.
[0029] Therefore, we propose a spline joint with high sealing performance. Utility Model Content
[0030] The present invention aims to solve the technical problems existing in the prior art and provide a spline joint with high sealing performance.
[0031] To achieve the above objectives, the present invention adopts the following technical solution: a spline connector with high sealing performance, comprising a spline body and a spline connector body. A sealing mechanism is provided on the outer wall of the spline connector body. The sealing mechanism includes a sealing ring, a rubber ring, an anti-wear ring, a first connecting ring, a second connecting ring, and a sealing air bladder. A lubrication mechanism is provided on the outer wall of the spline connector body. The lubrication mechanism includes an oil outlet groove and an oil inlet pipe.
[0032] As a preferred embodiment of this utility model, the sealing ring is fixedly installed on the outer wall of the spline joint body.
[0033] As a preferred embodiment of this utility model, the sealing ring is fixedly installed on the outer wall of the spline connector body, and the rubber ring is fixedly installed on the outer wall of the spline connector body.
[0034] As a preferred embodiment of this utility model, the anti-wear ring is fixedly installed on the outer wall of the spline connector body, and the connecting ring is fixedly installed on the outer wall of the spline connector body.
[0035] As a preferred technical solution of this utility model, the second connecting ring is fixedly installed on the outer wall of the spline connector body.
[0036] As a preferred technical solution of this utility model, the sealing airbag is fixedly installed on the left and right end walls of the connecting sleeve one and the connecting sleeve two that are close to each other.
[0037] As a preferred technical solution of this utility model, there are multiple oil outlet grooves, which are respectively opened on the outer wall of the spline connector body.
[0038] As a preferred embodiment of this utility model, the oil inlet pipe is fixedly sleeved on the outer wall of the spline connector body.
[0039] As a preferred embodiment of this utility model, the oil inlet pipe is connected to multiple oil outlet slots.
[0040] This invention provides a spline joint with high sealing performance. It has the following advantages:
[0041] 1. This type of spline joint with high sealing performance can improve the sealing performance between the spline body and the spline joint body by means of the sealing ring, sealing airbag, rubber ring and anti-wear ring when it is needed.
[0042] 2. This type of spline joint with high sealing performance facilitates lubrication of the spline body and spline joint body through the cooperation between the oil outlet groove and the oil inlet pipe when needed, preventing jamming. Attached Figure Description
[0043] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented, and therefore have no substantial technical significance.
[0044] Figure 1 This is a schematic diagram of the overall structure of the utility model.
[0045] Figure 2 For utility model Figure 1 Enlarged view of point A in the middle;
[0046] Figure 3 For utility model Figure 1 Enlarged view at point B in the middle;
[0047] Figure 4 For utility model Figure 1 Enlarged view of point C.
[0048] Legend:
[0049] 101. Spline body; 102. Spline connector body; 11. Sealing ring; 12. Rubber ring; 13. Anti-wear ring; 14. Connecting ring one; 15. Connecting ring two; 16. Sealing airbag; 17. Oil outlet groove; 18. Oil inlet pipe fitting. Detailed Implementation
[0050] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0051] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0053] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0054] A high-sealing spline joint, such as Figure 1-4 As shown, the system includes a spline body 101 and a spline connector body 102. A sealing mechanism is provided on the outer wall of the spline connector body 102. The sealing mechanism includes a sealing ring 11, a rubber ring 12, an anti-wear ring 13, a first connecting ring 14, a second connecting ring 15, and a sealing airbag 16. A lubrication mechanism is provided on the outer wall of the spline connector body 102. The lubrication mechanism includes an oil outlet groove 17 and an oil inlet pipe 18. The sealing ring 11 and the rubber ring 12 are fixedly installed on the outer wall of the spline connector body 102. The anti-wear ring 13 and the rubber ring 14 are fixedly installed on the outer wall of the spline connector body 102. 3. The connecting ring 14 is fixedly installed on the outer wall of the spline connector body 102. The connecting ring 2 is fixedly installed on the outer wall of the spline connector body 102. The sealing airbag 16 is fixedly installed on the left and right end walls of the connecting ring 14 and the connecting ring 2 15 that are close to each other. There are multiple oil outlet grooves 17, which are respectively opened on the outer wall of the spline connector body 102. The oil inlet pipe 18 is fixedly sleeved on the outer wall of the spline connector body 102 and communicates with the multiple oil outlet grooves 17.
[0055] The working principle of this utility model is as follows: When needed, the sealing ring 11, sealing airbag 16, rubber ring 12 and anti-wear ring 13 facilitate the improvement of the sealing performance between the spline body 101 and the spline joint body 102.
[0056] When needed, the oil outlet groove 17 and the oil inlet pipe 18 work together to facilitate lubrication of the spline body 101 and the spline connector body 102, preventing jamming.
[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A spline joint with high sealing performance, comprising a spline body (101) and a spline joint body (102), characterized in that: A sealing mechanism is provided on the outer wall of the spline connector body (102). The sealing mechanism includes a sealing ring (11), a rubber ring (12), an anti-wear ring (13), a connecting ring one (14), a connecting ring two (15), and a sealing airbag (16). A lubrication mechanism is provided on the outer wall of the spline connector body (102). The lubrication mechanism includes an oil outlet groove (17) and an oil inlet pipe (18).
2. The spline joint with high sealing performance according to claim 1, characterized in that: The sealing ring (11) is fixedly installed on the outer wall of the spline connector body (102), and the rubber ring (12) is fixedly installed on the outer wall of the spline connector body (102).
3. A spline joint with high sealing performance according to claim 1, characterized in that: The wear-resistant collar (13) is fixedly installed on the outer wall of the spline connector body (102), and the connecting collar (14) is fixedly installed on the outer wall of the spline connector body (102).
4. A spline joint with high sealing performance according to claim 1, characterized in that: The second connecting ring (15) is fixedly installed on the outer wall of the spline connector body (102), and the sealing airbag (16) is fixedly installed on the left and right end walls of the first connecting ring (14) and the second connecting ring (15) which are close to each other.
5. A spline joint with high sealing performance according to claim 1, characterized in that: There are multiple oil outlet grooves (17), and the multiple oil outlet grooves (17) are respectively opened on the outer wall of the spline connector body (102).
6. A spline joint with high sealing performance according to claim 1, characterized in that: The oil inlet pipe (18) is fixedly sleeved on the outer wall of the spline connector body (102), and the oil inlet pipe (18) is connected to multiple oil outlet slots (17).